What can cause strange noises in my Kia Rio's engine?

I have been noticing some strange noises coming from my Kia Rio's engine. It sounds like rattling or clicking. What could be causing this and is it something that requires immediate attention?

The rattling or clicking noises could be a sign of a loose belt or a problem with the timing chain. It is best to have a mechanic check it out as soon as possible to prevent any further damage.

It could also be a problem with the valves or a worn out spark plug. These issues can cause poor engine performance and should be addressed promptly.

Have you recently changed your oil? Using the wrong viscosity or low quality oil can also cause strange noises in your engine. Make sure to use the recommended oil for your Kia Rio.

If your Kia Rio has been sitting for a while without being driven, the engine may need some time to warm up and circulate the oil properly. If the noises persist, it would still be wise to have it checked by a professional.